#include<iostream>
#include<string>
#include<sys/types.h>
#include<sys/socket.h>
#include<netinet/in.h>
#include<arpa/inet.h>
#include<unistd.h>
#include<cstring>

void Usage(std::string proc)
{
    std::cout<<"Usage\n\t"<<proc<<"serverip serverport\n"
        <<std::endl;
}

int main(int argc,char *argv[])
{
    if(argc!=3)
    {
        Usage(argv[0]);
        exit(1);
    }
    std::string serverip = argv[1];
    uint16_t serverport = std::stoi(argv[2]);
    int sockfd = ::socket(AF_INET,SOCK_STREAM,0);
    if(sockfd<0)
    {
        std::cerr<<"socket error"<<std::endl;
        exit(2);
    }
        struct sockaddr_in server;
        memset(&server,0,sizeof(server));
        server.sin_family = AF_INET;
        server.sin_port = htons(serverport);
        server.sin_addr.s_addr = inet_addr(serverip.c_str());

        int n = connect(sockfd,(struct sockaddr*)&server,sizeof(server));
        if(n<0)
        {
            std::cerr<<"connect error"<<std::endl;
            exit(3);
        }
        while (true)
        {
            std::cout<<"Please Enter# ";
            std::string outstring;
            std::getline(std::cin,outstring);
            ssize_t s = send(sockfd,outstring.c_str(),outstring.size(),0);//写
            if(s>0)
            {
                char inbuffer[1024];
                ssize_t m = recv(sockfd,inbuffer,sizeof(inbuffer)-1,0);
                if(m>0)
                {
                    inbuffer[m]=0;
                    std::cout<<inbuffer<<std::endl;
                }
                else
                {
                    break;
                }
            }
            else
            {
                break;
            }
    }

    
    shutdown(sockfd,SHUT_WR);
    return 0;
}